The titular electricity of Nightmare is his capacity to show up in desires, either before the target had encountered him during the flesh in a very sort of ill omen or from the minds of survivors following a terrifying attack. He can change for the astral and ethereal planes. https://bookmarkfly.com/story19803718/how-much-you-need-to-expect-you-ll-pay-for-a-good-nightmare-mu-online-season-20